最近研究maven,故而用maven搭建了springmvc+mybatis框架来实践一下,如有不足之处,望指正。
下面开始讲解,本人视读者已经掌握maven的使用或者队maven有一定的了解,如果不了解maven,请查看小菜鸟的博客---maven详解。
本文用的spring是 4.0.5.RELEASE版,日志框架用的是logback 1.1.2,数据库连接池用的是c3p0 0.9.1.2,mybatis 用的是 3.2.7。所用技术基本都是最新版本。多说一句,本文 mybatis-spring桥用的是mybatis提供的mybatis-spring,当然你也可以用spring orm配合mybatis使用,但是没有用mybatis提供的简单,这里不再赘述。
首先创建一个maven project,编写pom文件,将对应的jar包引用进来。编辑后的pom如下:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.qijian</groupId> <artifactId>SpringMVC</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>SpringMVC Maven Webapp</name> <url>http://maven.apache.org</url> <!-- 构件的版本 --> <properties> <junit.version>3.8.1</junit.version> <logback.version>1.1.2</logback.version> <jackson.version>1.9.9</jackson.version> <common.fileupload.version>1.3.1</common.fileupload.version> <spring.version>4.0.5.RELEASE</spring.version> <aspectj.version>1.8.1</aspectj.version> <jstl.version>1.2</jstl.version> <mybatis-spring.version>1.2.2</mybatis-spring.version> <mybatis.version>3.2.7</mybatis.version> <c3p0.version>0.9.1.2</c3p0.version> <mysql.version>5.1.31</mysql.version> </properties> <!-- 项目依赖 --> <dependencies> <!-- junit测试依赖 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> <scope>test</scope> </dependency> <!-- logback日志工具 --> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>${logback.version}</version> </dependency> <!-- 避免IE执行AJAX时,返回JSON出现下载文件(属于springmvc) --> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>${jackson.version}</version> </dependency> <!--spring mvc的文件上传依赖 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>${common.fileupload.version}</version> </dependency> <!-- jstl表达式依赖 --> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>${jstl.version}</version> </dependency> <!-- srping security --> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-web</artifactId> <version>3.2.4.RELEASE</version> <exclusions> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> </exclusion> </exclusions> </dependency> <!-- spring mvc依赖开始 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <!-- spring mvc依赖结束 --> <!-- spring 切面依赖开始 --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>${aspectj.version}</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>${aspectj.version}</version> </dependency> <!-- spring 切面依赖结束 --> <!-- 运行mybatis所需依赖开始 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <!-- mybatis,spring桥(当然你也可以用spring orm配合mybatis使用,但是没有用mybatis提供的简单这里不再赘述)--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>${mybatis-spring.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!-- 用c3p0连接池去管理数据库连接 --> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>${c3p0.version}</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <!-- 运行mybatis所需依赖结束 --> </dependencies> <build> <finalName>SpringMVC</finalName> </build> </project>
下面开始配置springmvc ,首先编辑web.xml文件,配置springmvc,将请求转给spring mvc处理(注:springmvc在web.xml中是以servlet的形式
配置的,这里要和struts2的filter区分开)
springmvc 的servlet配置代码如下:
<servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value> classpath*:spring*.xml </param-value> </init-param> </servlet>
其中contextConfigLocation是可选配置参数,在此配置它的原因是因为本人将spring的配置文件放到了classpath下(即maven中的src/main/resources目录),
如果你不想配置此参数,则要配置另外一个listener(org.springframework.web.context.ContextLoaderListener),然后再将spring的配置文件(spring配置文件还有springmvc的配置文件,其中springmvc的配置文件名称为*-servlet.xml格式)放到web-inf目录下,你可以自己亲身实验一下,这里不再赘述,如果不清楚的可以找本人讲解。,其整个web.xml配置完如下:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0" metadata-complete="true"> <display-name>SpringMVC</display-name> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value> classpath*:spring*.xml </param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <!-- 设置spring mvc的编码集 --> <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
接着说spring的配置。spring 的配置比较简单,主要是开启spring注解以及引入数据库配置的properties文件,这里不再详细扩展,如有不明白的
地方可以给本人留言,本人将耐心讲解,spring.xml代码如下:
<?xml version="1.0" encoding="UTF-8" ?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <!-- 引入数据库属性文件 --> <context:property-placeholder location="classpath*:config.properties" /> <!-- 扫描类包,将标注Spring注解的类自动转化Bean,同时完成Bean的注入 --> <context:component-scan base-package="com.qijian" /> </beans>
接下来是springmvc的配置,主要是配置处理springmvc请求的适配器以及模型视图适配器,由于前面spring用的是注解,这里和上面保持同步,spring-servlet.xml的代码如下:
<?xml version="1.0" encoding="UTF-8"?> <!-- Bean头部 --> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd"> <!-- 启动Spring MVC的注解功能,完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/> </list> </property> </bean> <!-- 对模型视图名称的解析,即在模型视图名称添加前后缀 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/" p:suffix=".jsp" /> </beans>
其中org.springframework.http.converter.ByteArrayHttpMessageConverter是将二进制字节流转换器,因本人项目中用到了验证码,故需配置此项,
如果你没哟这方面需求的话可以不配置。要想使用springmvc上传功能的话还应配置org.springframework.web.multipart.commons.CommonsMultipartResolver
来支持上传功能,这里不再赘述。
最后是mybatis的配置,主要是配置了数据源(连接池)、mybatis接口以及xml文件的映射位置、事务管理(这里使用的是spring jdbc的事务管理,
好处是通用,你也可以用其他来管理mybatis的事务),这里主要是使用的声明式事务(你也可以用注解式事务,如果你不嫌麻烦的话还可以用代码的形式),编辑完
的mybatis配置文件如下:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <!--c3p0数据库连接池 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="${driverClassName}" /> <property name="jdbcUrl" value="${jdbc_url}" /> <property name="user" value="${jdbc_username}" /> <property name="password" value="${jdbc_password}" /> <property name="initialPoolSize" value="1" /> <property name="minPoolSize" value="0" /> <property name="maxPoolSize" value="50" /> <property name="acquireIncrement" value="5" /> <property name="maxIdleTime" value="10" /> <property name="maxStatements" value="0" /> </bean> <!-- myBatis文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 --> <property name="mapperLocations" value="classpath*:com/qijian/dao/impl/*.xml" /> </bean> <!--dao接口的位置--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.qijian.dao.inter" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 注解方式配置事务 --> <!-- <tx:annotation-driven transaction-manager="transactionManager" /> --> <!-- 拦截器方式配置事务 --> <tx:advice id="transactionAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="append*" propagation="REQUIRED" /> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="modify*" propagation="REQUIRED" /> <tx:method name="edit*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="remove*" propagation="REQUIRED" /> <tx:method name="repair" propagation="REQUIRED" /> <tx:method name="delAndRepair" propagation="REQUIRED" /> <tx:method name="get*" propagation="SUPPORTS" /> <tx:method name="find*" propagation="SUPPORTS" /> <tx:method name="load*" propagation="SUPPORTS" /> <tx:method name="search*" propagation="SUPPORTS" /> <tx:method name="datagrid*" propagation="SUPPORTS" /> <tx:method name="*" propagation="SUPPORTS" /> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut id="transactionPointcut" expression="execution(* com.qijian.service..*Impl.*(..))" /> <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" /> </aop:config> </beans>
最后再给出logback.xml代码,这个比较简单,如果不愿改变输出格式的话直接默认的xml格式就可以了,这里给出我的日志输出格式
logback.xml
<?xml version="1.0" encoding="UTF-8"?> <configuration> <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>%d{HH:mm:ss.SSS} %-5p [%c{0}] %m%n</pattern> </encoder> </appender> <root level="debug"> <appender-ref ref="STDOUT" /> </root> </configuration>
以上基本将springmvc+mybatis的框架配置代码配置完了,然后编写代码就可以运行了。下面是示例代码:
controller
package com.qijian.controller; import java.util.List; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.qijian.po.User; import com.qijian.service.inter.IUserService; import com.qijian.util.DataGrid; @Controller @RequestMapping("/test") public class TestController { private static Logger logger = LoggerFactory.getLogger(TestController.class); @Autowired @Qualifier("userService") private IUserService userService; @RequestMapping("/json") public @ResponseBody DataGrid<User> getAllUser(int page,int rows) { DataGrid<User> dg = new DataGrid<User>(); List<User> userList = userService.getAllUser(page,rows); dg.setRows(userList); dg.setTotal(userService.userCount()); logger.debug("------query------"); return dg; } }
service接口:
package com.qijian.service.inter; import java.util.List; import com.qijian.po.User; public interface IUserService { public List<User> getAllUser(int page,int rows); public int userCount() ; }
service实现
package com.qijian.service.impl; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.qijian.dao.inter.UserMapper; import com.qijian.po.User; import com.qijian.service.inter.IUserService; @Service("userService") public class UserServiceImpl implements IUserService { @Autowired private UserMapper userMapper; @Override public List<User> getAllUser(int page,int rows){ page = page<0?1:page; int start = (page-1) *rows; int end = page*rows; return userMapper.getAllUser(start,end); } @Override public int userCount() { return userMapper.userCount(); } }
dao接口:
UserMapper.java
package com.qijian.dao.inter; import java.util.List; import com.qijian.po.User; public interface UserMapper { int deleteByPrimaryKey(Integer id); int insert(User record); int insertSelective(User record); User selectByPrimaryKey(Integer id); int updateByPrimaryKeySelective(User record); int updateByPrimaryKey(User record); public List<User> getAllUser(int start,int end); public int userCount(); }
dao实现(mybatis的xml文件):
UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="com.qijian.dao.inter.UserMapper" > <resultMap id="BaseResultMap" type="com.qijian.po.User" > <id column="id" property="id" jdbcType="INTEGER" /> <result column="username" property="username" jdbcType="VARCHAR" /> <result column="password" property="password" jdbcType="VARCHAR" /> </resultMap> <sql id="Base_Column_List" > id, username, password </sql> <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" > select <include refid="Base_Column_List" /> from qijian_user where id = #{id,jdbcType=INTEGER} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" > delete from qijian_user where id = #{id,jdbcType=INTEGER} </delete> <insert id="insert" parameterType="com.qijian.po.User" > insert into qijian_user (id, username, password ) values (#{id,jdbcType=INTEGER}, #{username,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR} ) </insert> <insert id="insertSelective" parameterType="com.qijian.po.User" > insert into qijian_user <trim prefix="(" suffix=")" suffixOverrides="," > <if test="id != null" > id, </if> <if test="username != null" > username, </if> <if test="password != null" > password, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides="," > <if test="id != null" > #{id,jdbcType=INTEGER}, </if> <if test="username != null" > #{username,jdbcType=VARCHAR}, </if> <if test="password != null" > #{password,jdbcType=VARCHAR}, </if> </trim> </insert> <update id="updateByPrimaryKeySelective" parameterType="com.qijian.po.User" > update qijian_user <set > <if test="username != null" > username = #{username,jdbcType=VARCHAR}, </if> <if test="password != null" > password = #{password,jdbcType=VARCHAR}, </if> </set> where id = #{id,jdbcType=INTEGER} </update> <update id="updateByPrimaryKey" parameterType="com.qijian.po.User" > update qijian_user set username = #{username,jdbcType=VARCHAR}, password = #{password,jdbcType=VARCHAR} where id = #{id,jdbcType=INTEGER} </update> <select id="getAllUser" resultType="com.qijian.po.User"> select * from qijian_user limit #{0},#{1} </select> <select id="userCount" resultType="int"> select count(id) from qijian_user </select> </mapper>